Macrophages are cells that play a role in the response of the immune system of mice and other mammals to invasive organisms such as bacteria. unlike other mice, mice that are genetically incapable of making these particular cells do not show elevated levels of nitrates when infected with bacteria. the statements above, if true, provide the most support for which of the following conclusions?
(a) mice that are unable either to make macrophages or to make them in sufficient numbers will protect themselves from bacterial infections in some other way.(b) mice that show elevated levels of nitrates can easily fight off most types of bacterial infections.(c) in mice, macrophages play a role in the production of nitrates or inhibit a process by which nitrates are broken down or otherwise eliminated.(d) when a healthy mouse becomes infected with an invasive organism, the number of macrophages in the mouse’s body decreases.(e) injections of nitrates into mice that lack macrophages will not enhance the ability of these animals’ immune systems to fight off infection.

A - Mice that are unable to make macrophages or to make them in sufficient numbers will protect themselves from bacterial infections in some other way

Explanation:

The statement inferred that macrophages play a role in  the immune system of mice and since elevated nitrate levels is an indicator of bacterial infection, the fact that the mice do not show elevated nitrate level means that they must be fighting the bacterial infection in some other way which makes A the only logical conclusion.

B is unacceptable as the mice do not show elevated nitrate levels.

C is far fetched because it talks about the production of nitrates by macrophages while the statement inferred elevated nitrate as a result of bacterial infection.

D is false because it talks about mice able to produce macrophages and E is also wrong because it talks about injection of nitrates into mice which is not related to the statement

the major parts of the digestive system:

salivary glands.

pharynx.

esophagus.

stomach.

small intestine.

large intestine.

rectum.

accessory digestive organs: liver, gallbladder, pancreas.

the  different  of  these  two  are  that  they  differently  handle  their  team.

an  expressive  leader  focuses  on  the  task  at  hand  and  make  sures  that  their  goal  is  achieved.  they  accurately  finish  the  task.  an  instrumental  leader  on  the  other  hand  works  on  the  unity  of  the  group,  they  care  more  about  their  employees.  all  the  while  creating  a  good  environment.